Carhartt Men's 3 Pack Work Quarter Socks 73% Combed Cotton, 22% Polyester, 1% Lycra Spandex, 4% Other Fiber Made in US Machine Wash Ankle Style Premium Cotton Construction Arch support 3 pairs per package Materials: WHT: 72% Cotton, 21% Polyester, 6% Nylon, 1% Spandex BLK: 72% Cotton, 16% Nylon, 11% Polyester, 1% Spandex GRY: 65% Cotton, 28% Polyester, 6% Nylon, 1% Spandex